#include<stdio.h>
int main()
{
	int i;
	for(i=0;i<4;i++)
	{
		switch(i)
		{
			case 1:
				switch(i%2)
				{
					case 0:printf("**0**\n");break;
					case 1:printf("**1**\n");break;
				}
			case 2:printf("**2**\n");break;
			default:printf("**3**\n");break;
		}
	}
	return 0;
}
